From: Jason Fried <fried@fb.com>
Date: Mon, 13 Nov 2017 21:32:49 +0000 (-0800)
Subject: Add ByteRange/StringPiece Conversion for Cython
X-Git-Tag: v2017.11.20.00~15
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=cf9ba53a0e3635074b2117f471d6741f3a2396ba;p=folly.git

Add ByteRange/StringPiece Conversion for Cython

Summary:
Moving the cython definition to folly/python.
Adding simple conversion helper to_bytes

This is to cut down on duplicate folly::range cython definitions

Reviewed By: yfeldblum

Differential Revision: D6291125

fbshipit-source-id: 314b732a1516a03fb5c9a57939552bbabd81970b
---

diff --git a/folly/python/range.pxd b/folly/python/range.pxd
new file mode 100644
index 00000000..fef1dd9b
--- /dev/null
+++ b/folly/python/range.pxd
@@ -0,0 +1,17 @@
+cdef extern from "folly/Range.h" namespace "folly":
+    cdef cppclass Range[T]:
+        Range()
+        Range(T, int)
+        T data()
+        int size()
+
+ctypedef Range[const char*] StringPiece
+ctypedef Range[const unsigned char*] ByteRange
+
+ctypedef fused R:
+    StringPiece
+    ByteRange
+
+# Conversion Helpers
+cdef inline bytes to_bytes(R range):
+    return <bytes>range.data()[:range.size()]